It seemed to have an impact on the singer, who tweeted three crying-laughing images when the programme's official Twitter account posted the preview.

Belting out the hits (Photo: YouTube)

The full clip will air on Wednesday (Photo: YouTube)

The full edition will air on Wednesday night, as Gwen follows a long line of celebrities who have joined James for the sketch, including One Direction, Stevie Wonder, Justin Bieber, Adele and many more.

Delivering his opening monologue , he said: “I don’t know if you saw this week, it was reported that members of ISIS are trying to fake doctor’s notes to get themselves out of frontline duty.

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"Imagine a member of ISIS calling in like, “Oh hey guys (coughs), I've actually got a bit of a cough so I don’t think I can go to the suicide bombing today, I just really want to be at my best when I do it, so… (coughs), I’ll try and get some work done from home.

“But it’s weird to think that this is the organisation that is so dangerous, has employees that are like ‘Oh, Mondays, am I right?' "